We report on the theoretical investigations of the near-field diffraction patterns from micrometer-sized spherical dielectric particles illuminated by a light wave upon the excitation of morphology-dependent resonances in the internal field. The specific spatial area, which constitutes the so-called photonic jet (PJ), is studied. The longitudinal and transverse dimensions of the PJ are calculated along with its peak intensity as a function of the distance from a particle. The numerical calculations show that at a resonance depending on its quality factor, the PJ can “stick” to the particle; its intensity can increase to a several orders of magnitude, and its width can decrease but mostly near the microsphere surface. The average length of the PJ remains nearly unchanged.
© 2012 Optical Society of America
Original Manuscript: November 23, 2011
Revised Manuscript: December 26, 2011
Manuscript Accepted: January 4, 2012
Published: March 22, 2012
Yuri E. Geints, Alexander A. Zemlyanov, and Ekaterina K. Panina, "Photonic jets from resonantly excited transparent dielectric microspheres," J. Opt. Soc. Am. B 29, 758-762 (2012)